<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>fix box title</title>
<style>
	body{background:url(*) fixed;}
	#box{width:500px;height:600px;overflow:scroll;position:relative;border:1px solid #ccc;}
	#title{position:absolute;left;0px;top:0px;width:100%;height:20px;background-color:#ccc;}
</style>
</head>

<body>
<div id="box">
	<div id="title">some words</div>
	<script>
		for(var i=0;i<100;i++){
			document.write('some words<br>')
		}
	</script>
</div>
<script>
function $(id){return document.getElementById(id)}
$('box').onscroll = function(){
	$('title').style.top = $('box').scrollTop + 'px'
}
</script>
</body>
</html>
